title: Early growth and environmental implications of dietary zinc and copper concentrations and sources of broiler chicks.
mesh_terms: D000818:Animals; D001835:Body Weight / Q000187:drug effects; D002645:Chickens / Q000254:growth & development*; D003300:Copper / Q000008:administration & dosage / Q000172:deficiency / Q000494:pharmacology*; D004032:Diet; D019587:Dietary Supplements; D004063:Digestion; D004777:Environment; D019216:Metals, Heavy / Q000493:pharmacokinetics; D015032:Zinc / Q000008:administration & dosage / Q000172:deficiency / Q000494:pharmacology*
chemical_list: D019216:Metals, Heavy; D003300:Copper; D015032:Zinc